申请人:JFE Chemical Corporation
公开号:EP1211235A3
公开(公告)日:2004-01-02
4,4'-Dicarboxydiphenyl ether can be prepared by reacting diphenyl ether with an acetylating agent in the presence of a transition metal salt of trifluoromethane-sulfonic acid and an alkali metal perhalogenate to obtain 4,4'-diacetyldiphenyl ether and oxidizing the 4,4'-diacetyldiphenyl ether with an alkali metal hypohalogenite. A 4,4'-dicarboxydiphenyl ether, which is represented by the following formula (2): wherein Zs each represents -OH, -OR, -NH2, -NHR or -NR2, each R being an alkyl group having a carbon number not greater than 4, or a derivative thereof can be prepared by reacting a 4,4'-dihalodiphenyl ether, which is represented by the following formula (1): wherein X represents a halogen element, with carbon monoxide, a base and a nucleophile in the presence of a palladium catalyst and a bidentate phosphine compound.
4,4'-二羧基二苯醚可以通过在三氟甲磺酸盐的过渡金属盐和碱金属过卤化物的存在下,将二苯醚与酰化剂反应以得到4,4'-二乙酰基二苯醚,并使用碱金属次卤酸盐氧化4,4'-二乙酰基二苯醚制备而成。4,4'-二羧基二苯醚的化学式为(2),其中Zs分别表示-OH,-OR,-NH2,-NHR或-NR2,每个R都是碳数不大于4的烷基或其衍生物。4,4'-二卤代二苯醚的化学式为(1),其中X表示卤素元素,可以通过在钯催化剂和双齿膦化合物的存在下,将4,4'-二卤代二苯醚与一氧化碳、碱和亲核试剂反应而制备。